Apex_Collections - How do I loop through an apex collection of arrays

问题

I have a collection of array's, currently the code

select apex_collections.c001 from apex_collections where collection_name = 'LOAD_CONTENT'

Shows the below on screen.

C001

570

571

I have another table called errorTable that has a column Table1ID that matches with the values contained within the C001 array. I need to display all the records within the errorTable to the user where there is a match. In this example I want to show all records in errorTable where Table1ID match '570' or '571'.

I'm thinking I need to do a loop through the apex_collections C001 array and then do something like select * from errorTable where apex_collections.c001(i) = errorTable.Table1ID

I'm trying to get help on how to write this loop as I'm struggling a bit with that.

回答1:

You could do something like the following: select apex_collections.c001 from apex_collections apex inner join errorTable errors on apex.c001 = errors.Table1ID where apex.collection_name = 'LOAD_CONTENT'

inner join will give you only records from errorTable that match the values contained in the C001 column

Please take a look at the specification of Microsoft for more info regarding INNER JOINs

回答2:

Create a new region. Type: "PL/SQL Dynamic Content".

In the part for "PL/SQL Code". Put in something like:

begin
    htp.prn ('<b>Rows with errors:</b><br><br>');

    for i in (select errortable.*
                from errortable, apex_collections
               where apex_collections.c001 (i) = errortable.table1id 
                and apex_collections.collection_name = 'LOAD_CONTENT') loop
        htp.prn (i.column1 || '<br>');
    end loop;
end;

This join makes sure that only records from apex_collections are shown that have a matching entry in errortable

You can also simply create a report region (classic/interactive) and use the SQL as source:

select errortable.*
  from errortable, apex_collections
 where apex_collections.c001 (i) = errortable.table1id 
  and apex_collections.collection_name = 'LOAD_CONTENT'

来源：https://stackoverflow.com/questions/32930072/apex-collections-how-do-i-loop-through-an-apex-collection-of-arrays

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